Charge severing mechanism



Oct. 22, 1935. c. w. SCHREIBER CHARGE SEVERING MECHANISM Filed April 18, 1933 6 Sheets-Sheet l 1935- c. w. SCHREIBER CHARGE SEVERING MECHANISM Filed April 18, 1933 6 Sheets-Sheet 2 Oct" 22, 1935.

C. W. SCHREIBER CHARGE SEVERING MECHANISM Filed April 18, 1933 6 Sheets-Sheet 3 Oct. 22, 1935. c w, SCHREIBER 2,018,152

CHARGE SEVERING MECHANISM Filed April 18, 1933 6 Sheets-Sheet 4 Oct. 22, 1935. c. w. SCHREIBER 2,013,152

CHARGE SEVERING MECHANISM Filed April 18, 195; 6 Sheets-Sheet s Oct. 22, 1935. c. w. SCHREIBER 2,013,152

CHARGE SEVERING MECHANISM Filed April 18, 1933 6 Sheets-Sheet 6 Patented Oct. 22, 1935 UNITED STATES CHARGE SEVERING MECHANISM Gal-1W. Schreiber, Alton, Ill., assignor to wens-' Illinois Glass Company, a corporation of Ohio Application April 18, 1933, Serial No. 666,727

. glass.

An object of the present invention is the provision of a single charge severing unit common to a series of mold groups, said unit including fluid operated motors for placing it in charge sev-.

ering position and actuating the cutter or shears constituting a part of said unit.

Another object is the provision in mechanism of the above character of means whereby the cutter or shears forming a part thereof will be held stationary a predetermined period of time at the charge severing position prior to actuation of the cutter or shears .in the severance of gathered mold charges. Thus the-cutter or shears at the time of severance of the glass will be entirely free from vibration, which if present, would result in distortion of the bottom end of the mold charge and unsatisfactory severance of the glass.

Other objects will be in part apparent and in part pointed out hereinafter.

In the drawings:

Fig. 1 is a side elevational view of the charge severing mechanism representing one embodiment of the present invention. I

Fig. 2 is a fragmentary side elevational view taken from the opposite side of Fig. 1.

Fig. 3 is a sectional view taken substantiall along the line III-III of Fig. 2.

Fig. 4 is a fragmentary sectional view taken substantially along the line IVIV of Fig. 2.

Fig. 5 is a top plan view. a

Fig. 6 is a fragmentary detail sectional view of the front end of the shear actuator.

Fig. 'l is a fragmentary side elevational view of the shear actuating motor and air controlling valves at the opposite ends thereof.

Fig. 8 is a vertical longitudinal sectional view of the shear actuating motor.

Fig. 9 is a sectional elevational view taken along the line IX-IX of Fig. 8.

Fig. 10 is a diagrammatic view showing the manner in which the forming machine controls operation of the charge severing mechanism, the latter being shown in top plan with parts in section.

Figs. 11, 12, 13, and 14, illustrate the successive positions of the ram and shears during a single cycle of operations. Fig. 11 shows the shears open and in their retracted position. Fig. 12 shows the shears projected and about to sever a gathered mold charge from the supply body. Fig. 13 illustrates the manner in which a continuous movement of the shear actuating motor moves the blades together for severing a mold charge and immediately separates them. Fig. 14 is a view similar to Fig. 13 bringing out that in advance of each projection of the ram the shears are actuated in the same fashion as in the projectecl position. I

In more or less general terms the mechanism 10 consists of a horizontal ram carriage arranged at one side of a bottle blowing machine and molten glass container substantially as shown in a copending application Serial Number 666,726, filed April 18, 1933, in the names of John E. Mc- 15 Laughlin and Carl W. Schreiber, now Patent No. 1,991,705, dated February 19, 1935. A cutter carrying ram is mounted on the carriage for reciprocation at regular time intervals in a fashion to place the cutter in charge severing and resting positions in alternation. A fluid operated motor controlled by movement of the molds of the forming machine reciprocates the ram. Another fluid operated motor which is mounted upon said ram is suitably connected to the cutter for actuating it at each end of the path of reciprocation of said ram.

In the illustrated embodiment of the invention there is included a horizontal ram carriage 20- mounted upon a pedestal 2| rising from a base 3 22, said ram carriage including a. pair of opposed parallel tracks 23 or-ways in which a ram 24 is supported on rollers 24 for horizontal reciprocation. A fluid operated motor 25 for reciprocating the ram is mounted upon the ram carriage 20 and extends lengthwise thereof. The piston 26 is connected to a piston rod 21 which extends through the forward end of the motor cylinder 28 and is attached to a depending lug 29 at the back end of the ram 24. Air under pressure is supplied to the opposite ends of the motor 25 (Figs. 4, 5, and 10) through pipes 30 which are connected to a reversing valve 3|, the latter in turn connected to a supply tank '33 through a pipe 32. The construction of the reversing valve and means for operating it may be substantially as follows: A horizontal cylinder 34 is provided at one side with a longitudinal series of three chambers 35, the central chamber being connected to the pipe 32 leading to the air supply tank 33 while the other two chambers communicate by way of the pipes 30 with the opposite ends of the ram reciprocating motor 25. Flow of air through the pipe 32 is regulated and controlled by a solenoid operated valve 32 connected by .from the supply body.

In operation, assuming that the parts are positioned as indicated in Figs. 5', 8, and 11, and that the molds of the forming machine are rotating continuously and further, that air under under pressure flows to the intermediate chamber 35 of the reversing valve and thence through one of the pipes 30 to the back end of the ram reciprocating motor 26. The ram 24 is thereby projected and brings the valve stem 8| into alignment with the center of the cross head 5|. At this time the other cam 41 associated with the mold 48 referred to heretofore, actuatesthe limit switch 46 to thereby open the solenoid valve 43. Air under pressure now flows through the pipe 42 causing inward movement of the piston 40 of the reversing valve and corresponding movement of the cross head 5| so that the valve 90 is opened to admit air under pressure to the inner or forward end of the shear actuating motor 49.

Backward movement of the piston 66 substantially to the center of the motor cylinder 65 (Fig. 13) is suillcient to bring the shear blades 53 together and sever the gathered mold charge Additional rearward movement of said piston (shown in dotted lines in Fig. 13) operates through the rack bar 63 and pinions 52 to again separate the shear blades. Substantially upon completion of the separation of the blades air under pressure will have entered the front end of the ram reciprocating motor by way of one of the pipes 3U due to reversing of the position of the piston 40 and cause retraction of the ram. At the time the ram completes its retractive movement, the valves 68 and 19 at the opposite ends of the shear actuating motor 49 are operated by engagement of one of the arms 8i with the stop 86 and thereby so positioned that air under pressure is admitted to the back end of the motor and exhausted from the front end thereof. This results in forward movement of the piston 66 to the end of the cylinder 85 and consequent closing and opening of the shear blades as occurred in the fully projected position. The valves will be again reversed and positioned as shown in Fig. 8 at the time the ram starts its next projecting movement. In Figs. 11 to 14 inclusive, the successive positions of the piston, rack, and pinions, and the shears involved in a single cycle of operations are illustrated.

-Modifications may be resorted to within the spirit and scope of the appended claims.

What I claim is:

1.' In combination, a ram mounted for reciprocation between horizontally spaced cutting and rest positions, shears. at one end of the ram including a pair of shear arms, a vertical hinge pin carried by the ram and supporting said arms, a pair of pinions mounted for oscillation about separate vertical axes, means providing operating connection between said pinions and shear arms whereby rotary movement of the pinions in one direction a predetermined degree moves the shears toward and away from each other, a rack bar disposed between and meshing with the pinions, and means for reciprocating the rack bar in timed relation with movement of the ram to thereby move the shear arms toward and away from each other.

2. In combination, a ram mounted for reciprothe ram, the operating connection between the cation between horizontally spaced cutting and rest positions, shears. at one end of the ram including'a pairof shear arms, a vertical hinge pin carried by the ram and supporting said arms. a

pair of pinions mounted for oscillation about sep- 5 arate vertical axes, means providing such operating connection between said pinions and shear arms that rotation of the pinions a predetermined distance in one direction both closes and opens the shears, a rack bar disposed between and 10 meshing vwith the pinions, a piston motor carried by the ram and including a'piston and piston rod connected to the rack bar, and means operating automatically after the shears have reached the cutting position for supplying air under pressure 15 to one endof said motor and thereby move the piston, rack bar, and pinions.

3. In combination, a horizontal ram mounted for reciprocation between horizontally spaced cutting and rest positions, a vertical hinge pin 20 at one end of the ram, shears including a pair of shear arms pivoted to said hinge pin, blades at the outer ends of said arms, a pair of pinions arranged side by side for oscillation about separate vertical axes, radially extending fingers connected 25 to said pinions, links connecting the outer ends of said fingers and the shear arms, a rack bar disposed between and meshing with said pinions for closing and opening the shears-on movement of the rack bar in one direction, a fluid operated motor for reciprocating said rack bar, and means for operating said motor in timed relation with movement of said ram.

4. In combination, a horizontal ram mounted for reciprocation between horizontally spaced 35 cutting and rest positions, shears at one end of the ram, a piston motor at the other end of the ram, means providing operating connection between said piston motor and shears such that movement of the piston in one direction both 40 closes and opens the shears, a valve at one end of the motor for regulating application of air under pressure to said end, a ram reciprocating motor operable to move the ram and thereby place said shears in cutting and rest positions in alternation, means including a reversing valve for supplying air to the opposite ends of said ram reciprocating motor in alternation, and means whereby actuation of the reversing valve when the ram is projected opens said valve in the 50 shear actuating motor;

5. Charge severing mechanism including a horizontal ram, shears at one end thereof including a pair of shear arms, cutting blades at the outer ends of said arms, a hinge pin carried by. the ram 55 and supporting said arms, means for moving the arms toward and from each other about said hinge pin including a piston motor mounted upon the ram, means whereby actuation of the piston motor in one direction moves the arms toward 60 each other and then separates them, automatic means for regulating and controlling the operation of said. motor, and means for reciprocating motor and shear arms including rack and pinion mechanism.

6. Charge severing mechanism comprising a horizontal ram, shears at one end of the ram including a pair of shear arms, cutting blades at 70 the outer end of said arms, a hinge pin carried by the ram and supporting said shear arms, a shear actuating piston motor at the opposite end of the ram, said motor including a horizontal cylinder, a piston therein, a rotary valve at one end 75 of the cylinder for controllingthe flow of air under pressureto and from the cylinder, a rotary exhaust control valve at the other end oi said cylinder, a separate inlet valve at said other end oi the cylinder, means iormaintaining air under,

pressure to the exterior of said inlet valve and the rotary valve at the opposite end oi the motor, means for actuating said valves to thereby admit air under pressure to opposite ends of the cylinder in alternation, means including rack and shear actuating piston motor at the opposite end of the ram, said motor including a horizontal cylinder, a piston therein, a rotary valve at one,

end of the cylinder for controlling the flow of air under pressure to and from the cylinder, a rotary exhaust control valve at the other end of said cylinder, a separate inlet valve at said other end of the cylinder, means for maintaining air under pressure to the exterior of said inlet valve and the rotary valve at the opposite end of the motor, means for actuating said valves to thereby admit air under pressure to opposite ends of the cylinder in alternation, means including rack and pinion mechanism providing operating connection between the piston and shear arms whereby movement of the piston in either direction I causes the shears to move toward and away from each other, means for reciprocating the ram to thereby place the shears in cutting and rest positions in alternation, and means whereby said separate inlet valve is actuated only after the shears have been placed in cutting position.

i 8. Charge severing mechanism comprising a horizontal ram, shears at one end of the ram including a pair of shear arms, cutting blades at the outer end of said arms, a hinge pin carried by the ram and supporting said shear arms, a shear actuating piston motor at the opposite end of the ram, said motor including a horizontal cylinder, a piston therein, a rotary valve at'one end of the cylinder for controlling the flow of air under pressure to and'i'rom the cylinder, a rotary exhaust control valve at the other end oi said cylinder, a separate inlet valve at said other end of the cylinder, means for maintaining air' under pressure to the exteriorof said inlet valve and the rotary valve at the opposite end of the motor, means for actuating said valves to thereby admit air under pressure to opposite ends of the cylinder in alternation, means providing operating connection between the piston and shear aora sa armswherebymovementoltheplstonineither direction causes the shears tomove toward and away from each-other, means for reciprocating theramtotherebyplacetheshearsincutting andrestpositionsinalternation, and meanss sai exhaust valve and the rotary valve attheother end aaidmotorarereversed together at the time theram'and shears reach their rest position.

9. In combination, a horizontal ram, 0. pair of i0 pivoted shear blades at one end of the ram, means (or oscillating the blades about their pivot includi'n'g'a pair of pinions arranged side by side in spaced relation, links connecting the shear bladestothepinionsatapointspacedradiallylt from their axes, and means including a rack bar meshing with the pinions for oscillating the pinions and causing the shear blades to move toward and away from each other with rotary movement oi the pinions in one direction.

10. In combination, a pair of shear blades, arms supporting said blades and mounted for cacillatlon about a common vertical pivot, a pair of arms arranged side by side for oscillation about separate vertical axes, links connecting the outer 25 ends of the last named arms and the shear blade supporting arms, and means for imparting such a degree of oscillatory movement to said last named arms that a predetermined 'extent of movement thereof in one direction eiiects move- 30 ment 0! the shear blades toward and away from each other.

11. In combination, a pair of shear blades, arms supporting said blades and mounted for oscillation about a common vertical pivot, a pair 3 of arms arranged side by side for oscillation about separate vertical axes, links connecting the outer ends of the last named arms and the shear blade supporting arms, means for adjusting the length oi the links to thereby change the normal spaced to relation between the cutting edges of the blades and means for imparting such a degree of oscillatory movement to said last named arms that a predetermined extent of movement thereof in one direction eiiects movement of the shear blades toward and away from each other.

12. In combination, a pair of shear blades, arms supporting said blades and mounted for oscillation about a common vertical pivot, a pair, 01' arms arranged side by side for oscillation about 0 separate vertical axes, links connecting the outer ends of the last named arms and the shear blade supporting arms, means for adjusting the length oi the links to thereby change the normal spaced relation between the cutting edges of the 5 blades and means including rack and pinion mechanism for imparting such a degree of oscillatory movement to said last named arms that a cm W. scrmnrnnn. 

